-- -- -- -- -- like oh my gosh I can't believe I just got this on Libya. It began when students in Justine bodies gym class began noticing money and other items missing from their backpacks she decided to hide in a walker to watch never imagining what she would see. I didn't. Want to -- that she would do something like that she was so nice but -- debit. Her very popular teacher -- almost thirty year veteran was going through student backpacks appearing to take money -- something needed to be -- like that's not okay Justine felt she had to do something and put herself into a locker again this time with a phone video camera putting another phone camera pointing from another locker. Right when we got the video. Think oh my gosh I can't leave a -- this on video. And that I couldn't Mike believe that I had and I kept watching and over and over. She in the other girls took the video to the principal. And so that -- investigate and -- And he told us to delete the video but I -- sent it to my dad. Others had also sent a video out by then it was not an easy decision to take it or to share -- they say but other students agree with their decision. They have been supportive and so that we did the right thing makes -- to practicing -- mandated. Let. You know that he can't help but feel about burglaries there -- -- -- good teachers and just think -- -- we -- like we did the right thing but it's still like you know kinda hard. In Linden -- marquis news ten.

This transcript has been automatically generated and may not be 100% accurate.

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{"id":18602814,"title":"Student Allegedly Catches Teacher Stealing on Tape","duration":"1:26","description":"California high school sophomore says she hid in a locker to record the theft with her cell phone.","url":"/US/video/student-allegedly-catches-teacher-stealing-tape-18602814","section":"US","mediaType":"default"}